Adjustable bracket.



1. H. CRIST &1.CSCHILKEN.

ADIUSTABLE BRACKET.

APPLICATION HLED MAY l |916.

Patented June 26, 1917.

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TED STATES JOHN H. CRIST AND JOHN C. SCHILKEN, OF PITTSBURGH,VPENNSYLVAN'UL ADJUSTABLE BRACKET.

Specification of Letters Patent.

Patented June 26, 1917.

To all whom t may concern:

Be it known that we, JOHN JOHN VC. SGi-IILKEN, States, residing atPittsburgh, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful 11nprovements in Adjustable Brackets, ofwhich the following is a specication.

Our invention consists of an improvement in adjustable brackets adaptedto be used in connection with a suitable wall or other supportingstructure,-or a supporting column or backing of any. suitable kind, forcarrying or supporting any desired obj ect for display, or any purposeto which the device may be put.

One of the particular objects in view is to provide, in' a bracket ofthe type herein set forth, a simple, cheap and efficient construc-vtion, capable of being quickly adjusted to any desired position, andthere located by mere adjustment or movement of the bracket memberitself. 1t constitutes an improvement on that form` of bracketconstruction disclosed in the prior application of John H. Crist, filedMarch 1, 1915, Serial No. 25143.

It comprises, generally stated, a supporting column or bar capable ofattachment to any desired base or wall or the like provided with aslotted front, and a bracket having a locking member slidably mountedtherein and pivotally connected with the bracket itself in such a manneras to Iutilize the pivoting extremity of the bracket as a cam lockcapable of being tightened or loosened, the parts being connected as aunit by the pivotal mounting of the bracket, as hereinafter more fullydescribed.

Preferred forms of' the invention yare shown in the accompanying`drawings, in which- H. CRIsT and Figurel is a vertical sectional viewshowl ing one form of the invention as applied to the slotted frontyplate of a supporting column.

Fig. 2 is a face view of a portion of such slotted front column support.

Fig. 3" is afsectional plan view of Fig. 1, indicated by the line III.111. of Fig. 1.

Fig. L1' isa perspective detail view showing the operative'mechanism ofthe bracket of Fig. 1.y

Fig. the parts mechanism 5 is a collective detail view showing of thelocking and supporting detached in perspective.

citizens of the United Fig. 6 is a detail view showing a modifiedconstruction of bracket supporting plate.

Fig. 7 `is a view similar to Fig. 1l, but showing a modifiedconstruction of-bracket having a supplemental brace support.

Fig.v8 is a sectional detail view similar to Fig. 3, showing a modifiedconstruction.

For the purpose of providing a continuous slotted attaching means forthe bracket, orfor any desired number of brackets, we utilize a casing11 of sheet metal, adapted to conform generally to the cross section ofan interior supporting bar 8S, which may be of any preferred form, as astandard channel form, as shown.

Casing 14 may be made to completely embrace the supporting bar, as shownin Fig. 3, or may be attached to it in any other suitable way, but is soconstructed as to provide the laterally extending lip sections 15, 15,at each side of an interior cavity 16, and providing an intervening slot17 for attachment of the bracket holding member. It will of course beunderstood that the casing 14- inay be made of any suitable form toprovidel the interior clearance opening and the inwardly turnedretaining lips with the intervening slot, and that the casing may bemade and used quite independent of the interior supporting bar, asdesired.

Said bracket holding member, as shown, consists of a plate 18 of a crosssectional width and thickness to freely fit and slide withinthelongitudinal cavity 16 behind the retaining lip or flange portions 15,against which it bears outwardly in tightened position. i

`Plate 1S is of a suficient length to insure the tightening action,hereinafter described, in caseits inner terminal portion is thrustagainst the front face of bar 38.

Platel is provided at one end with an outwardly bent narrowed pivotingterminal 19, of a width to freely extend through the slot 17 between theedges of lips 15, and is provided with a terminal pivoting hole 20.

Bracket 21, which may be of a strip of plate metal, or a wire flattenedat its pivoted end, or of any other suitable construction, is pivotallyconnected with terminal plate 22 having a slot 23 adapted to lit overthe abutment 19 when the parts are assembled.

The pivoting lend of the bracket 21 is rounded at one side of itslongitudinal center, inwardly beyond the pivotal mounting' 26, asindicated at 2 5, whereby to provide a looking cam face, the distancefrom the pivoting center to the inner abutting straight portion 27 beingjust sufficient to provide for a tight intimate binding engagement whenthe bracket is thrust outwardly in alinement with the abutment terminal19, as indicated in Fig. 3. The distance from the pivoting center tosuch bearing end 27 is slightly greater than the distance between thepivoting center and the straight side 28 of the bracket, into which thecurved portion 25 merges, so that when the bracket is thrust around tothe position indicated in dotted lines in Fig. 3, it will insureloosening of the device, so that it may be easily raised or lowered toany desired position or entirely removed from the slotted cavityendwise, as will be readily understood.

When located at the desired height, and the bracket 21 is thrust aroundinto operative position, the cam terminal bearing against the outer faceof plate 22 thrusts it tightly against the outer face of flange lips 15,at the same time drawing vabutment 19 outwardly and bringing the outerface of plate 18 into tight gripping engagement with the inner sides ofthe liange lips.

Then thus adjusted, the bracket is lixedly held in position and may beused to support any article or articles within its capacity as toweight.

If desired, the bracket supporting plate may be made in the manner shownin Fig. 6, in which plate 18d is connected with terminal 19d by anarrowed neck providing the shouldered slots 29d, 29d, and the pivotinghole 20d. vIn such caseV the washer plate 22 fits by its slot 23 overand into such slots, slot 23 being sufiiciently wide, and by interveningbetween the front shoulders of terminal 19d and the lips 15, provides apositive limiting or holding washer, insuring maintenance of the tion.

If desired, the bracket may be made in the form illustrated in Fig. 7,similar to the bracket shown in Fig. l of the application above referredto, in which case the upper bracket member 21@L may be formed at itsouter end in any suitable manner, as indicated, reversed upon itself,providing the diagonal brace 21h, each of which portions is provided atits inner end with a pivoting terminal of the same construction as ofthe single form above described.

The plate 18a in such case is provided with anl upper and a lowerabutment 19a, each'of which is pivotally connected at 26a,

sage of the abutment 19a,

parts in operative posiwith each inner end of the bracket members, eachof which is provided at one side with the curved cam terminal formation.

The washer plate .22a is likewise provided with a slot 23a at each endand the construction as thus made operates in exactly the same manner asabove described, except that it is considerably stronger and more rigid,due to the duplication of the pivoting members.

In Fig. 8 we show a further modification in which the bracket arm 21c isequidistant at its pivotal terminal as to the distance between thepivoting center and the end and one of its Vsides respectively, wherebyto provide a double cam face 27 C, 27C, respectively, interveningclearance being provided by cutting away the metal somewhat less thanthe arc of the circle from the pivoting center, as indicated at 25C. Y

The other elements are similarly constructed and indicated by similarnumerals having the exponent c.

The construction and operation of the device will be readily understoodfrom ythe foregoing description, understood that the shape or design ofthe bracket itself may be variously changed or vadapted to the varioususes to which the invention may be applied.

It will be understood porting bar 38 may be furnished with any suitableattaching terminals or connections, such as those shown in the abovementioned application, whereby to adapt it to utilization dependent onthe local conditions, as for instance, by attachment to the ceiling andfloor respectively, or other means may be provided for securing. itagainst a wall, column or the like.

The invention is well adapted to various uses, and may be made indifferent sizes and weights, or otherwise changed or varied, dependingon the use to which it is put.

at we claim is:

1. The combination with a supporting standard having a longitudinalslotted cavity, of a mounting device slidably engaging said slottedcavity, a supporting plate slidably mounted therein, a pivoting terminalthereon and extending outwardly through said slot Vin said standard, awasher plate slidably mounted on said terminal, and a bracket pivoted tosaid terminal having a rigid tightening cam portion adapted to bearagainst the outside faceof the washer plate and to tighten thesupporting plate against the inside thereof.

2. The combination with a supporting standard having a longitudinalslotted cavity, of a mounting device slidably engaging said slottedcavity, said device comprlsinga supporting plate slidably mountedtherein, a

portion for pasy and it will also bealso that the sup-y said devicecomprisingpivoting terminal formed integral therewith 13o and extendingoutwardly at right angles to In testimony whereof We hereunto aiiix saidplate through said slot in said standard, our signatures in the presenceof two Wit- 10 a Washer plate slidably mounted 0n said ternesses.

niinal, and a bracket pivoted t0 said ter- JOHN H. CRIST. 5 minal havinga rigid tightening cam portion JOHN C. SCHILKEN.

adapted to bear against the outside face of Witnesses: the Washer plateand to tighten the support- W. A. HEGKMAN, ing plate against the insidethereof. C. M. CLARKE.

Copies of this patent may be` obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

